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Another oil leak thread

755 Views 8 Replies 3 Participants Last post by  Ablackcts, 
A
2012 coupe, I noticed an oil leak (I thought was the rear main), then I slid under the car, noticed the oil filter was loose. I changed the oil, tightened the filter pretty snug this time, wiped it all down. A few days later, more oil. I do have a catch can but it only goes to the valley and S/C. My valve covers do not seem to be leaking. The leak appears to be coming from above the oil filter, on the drivers side of the engine. Anything specific I should look for? Is it possible that it’s coming from the PVC on the valve covers and spilling over?
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K
The bracket the oil filter housing mounts to the block has a tendency to leak.....try righting the bracket or replace the gasket.
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A
This one?

2009-2017 GM Oil Cooler Adapter Seal 12613165 | GM Parts Online

OEM 2009-2017 GM Part # 12613165 - Oil Cooler Adapter Seal
www.gmpartsonline.net www.gmpartsonline.net

Or this one?

1999-2020 GM Engine Oil Cooler Gasket 15203889 | GM Parts Online

OEM 1999-2020 GM Part # 15203889 - Engine Oil Cooler Gasket
www.gmpartsonline.net www.gmpartsonline.net
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K
View video and you'll see the leak.

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A
So I hear that these leak all the time and often do even with new gaskets. I’m planning on using RTV as well but are there any tips/ tricks before I get started?
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K
You are fine....
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A
I replaced the gasket, lapped both mating surfaces, also did an unexpected coolant flush.....

I still have a leak, its being blown back all over the transmission pan and exhaust. It does not look like a rear main. Maybe back of heads, or somewhere on the top of the block? Any ideas?
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Jim
Oil pan gasket?
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A
2
Just to add closure to this thread, the leak was actually unburned oil from the S/C due to a catch can issue:
Hood Automotive tire Motor vehicle Automotive design Bumper

Grille Hood Motor vehicle Automotive exterior Bumper
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